The Cute Heroine of Kuai Wen Gave Birth to a Daughter Was Accidentally Deleted and I Forgot About the Book. People Who Have Read It

There is a dimension where the heroine is considered a granddaughter by the hero's grandmother (originally she was intended to be his wife, but the hero was unwilling), but later the hero regrets it, and the hero is found to have azoospermia. The grandma also knows about it, but the hero does not show the paper to the heroine, and the heroine sees it later.